Abstract: A gasket is provided including tubular nipples projecting outwardly from one side thereof for reception through mounting flange bores of an article of manufacture to which the gasket is to be secured prior to the article being shipped to an assembly point at which the article is to be bolted to a support structure therefor by mounting bolts secured through the bores and anchored relative to the mounting structure. The tubular nipples include inner sleeves whose ends corresponding to the outer ends of the nipples are constructed of ductile material and the sleeves are at least frictionally retained within the nipples. After the nipples are passed through the mounting bolt bores in an associated article of manufacture, the ductile ends of the inner sleeves are swedged over those surface portions of the article of manufacture disposed about the mounting bolt bores.